Apparatus for facilitating the application of luminous material



R. w. ERDLE. v APPARATUS FOR FACILITATING THE APPLICATION OF LUMINOUSMATERIAL.

APPLICATION FILED MAR 7, I92I.

Patented June 13, 1922'.

E T 5Q REINER W. ERDLE, OF NEW YORK, N. Y.. ASSIGNOR TO RADIUM DIALCOMPANY, OF PITTSBURGH, PENNSYLVANIA.

APPARATUS FOR FACILITATING THE APPLICATION OF LUMINOUS MATERIAL.

Specification of Letters Patent. Patented June 13, 1922.

Application filed March 7, 1921. Serial No. 450,438.

To all whom it may concern:

Be it known that I, REINER W. ERDLE, a citizen of Germany, and aresident of New York, in the county of New York and State of New York,have invented certain new and, useful Improvements' in Apparatus forFacilitating the Application of Luminous Material; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such; as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to devices for facilitating the application ofluminous material and more particularly to means for accomplishing theapplication of such material to the characters of dials and otherobjects.

In the application of luminous material to the characters on clock andother dials and other objects, it has heretofore been the practice toapply the material by hand with the use of a small brush or other fineimplement. Such method is very slow and it is diflicult to obtainuniformity of execution and also of luminescence.

One object of my present invention is to provide. mechanical means tofacilitate the application of luminous material to dials and otherdevices, and to insure accuracy, rapidity and uniformity of suchapplication of the material without the necessity for the employment ofskilled labor such as has been necessary with methods of applicationheretofore employed.

l/Vith this and other objects in view the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

In the accompanying1drawings, Figure 1 is a perspective view s owing thepositions of the parts when the device is in use, and Figure 2 is asimilar view showing the positions of the parts ready to receive a dialor other object.

1 represents a box or frame provided with a table 2 which is preferablyslightly inclined. To the table 2 near the upper edge thereof, a plate 3is secured and to this plate an open metal frame 4 is hinged asindicated at 5. This open frame carries a stencil 6 which may be made ofsheet celluloid or other light material in which the numerals orcharacters 7 may be conveniently cut. The upper edge of this stencil issecured to the frame 4 by means of a plate or strip 8,

the latter being secured to the frame by means of bolts or screws 9.Strips of metal or other rigid material are secured to the lower endportion of the stencil, as indicated at 10, by means of. suitable screwsor bolts 9 and these strips are connected with the lower end of theframe 4 by means of springs 11.

The table 2 is provided at or near its center with an opening in which adisk 12 is supported and this disk is made with two parallel elongatedslots to expose the poles of a magnet 13 which may be supported inposition by said disk. In the drawing I have shown the magnet as of thepermanent type but it is evident that an electromagnet might beemployed. Blocks 14 are secured to the table 2 near opposite edgesthereof and at respective sides of the disk which supports the magnet.To these blocks the holders 15 of pointers 16 are hinged.

Many dials, such as clock dials are made of metal containing iron orwith iron backing plates.

In the operation of my improved device, the frame 4 will be disposed inraised. position, as shown in Figure 2, and, after raising the pointers16, a dial having a backing of magnetic material will be placed over thepoles of the magnet 13 and the pointers will then be lowered over thedial. The dial may now be manipulated to turn the same until thepointers shall register with predetermined points on the dial. Thestencil will now be placed over the dial so that the character openingsshall register with the characters on the dial and the stencil may thenbe secured at one edge to the frame 4 and the strips 10 secured to theother edge and as said strips are connected with the lower member of theframe 4, the stencil will be supported in proper position in said frame.It will be understood that before the stencil shall have been adjustedas above described, the points 16 will-have been raised. The stencilhaving been adjusted to proper position over the dial, luminous materialmay be wiped or otherwise applied with a brush or other device over thestencil so that it will pass through the open stencil characters andbecome deposited on the characters of the dial accurately. When thefirst dial shall have been treated or operated upon in the manner abovedescribed, the frame 4: carrying the stencil will be raised and the dialremoved from the magnet. The stencil 6 having been adjusted in the frame4, it need I claim as new and desire to secure by not be furtheradjusted for dials subsequently operated upon. Thus the second andsubsequent dials may be placed on the magnet and adjusted manually withthe use of the pointers 16 by moving or sliding the dial over the magnetand, having been thus adjusted, the pointers 16 will be raised and theframe 4 then lowered to position the stencil accurately over the dialand the stenciling operation will then be performed as above explained.

Various slight changes might be made in the details of construction ofmy invention without departing from the spirit thereof or limiting itsscope and'hence I do not wish to restrict myself to the precise detailsherein set forth.

Having fully described my invention what Letters-Patent. is: v

1. In a device of the character described, the combination of means forretaining an object to be stenciled against accidental movement in anydirection but permitting said object to be moved over the retainingmeans for adjusting purposes. and a carrier for a stencil movablymounted to permit the latter to be moved toward and from the objectmounted over the retaining means.

2. In a device of the character described, the combination of a table.magnetic means for retaining an object to be stenciled, and a carriermovably mounted on said table for supporting a stencil over workretained by said magnetic means.

In a device of the character described, the combination with a frameprovided with a table. magnetic means for holding a dial or other objectin position on the table, movable pointers to register with oppositepoints on said dial or other object, a frame having movable connectionwith the table, and a stencil carried by the movable frame.

4:. In a device of the character described, the combination with a tableprovided with a slotted part, of a magnet having its poles disposed inthe slotted part of the table and adapted to hold a dial or other objectin adjusted position on the latter, means on the table for determiningthe accurate adjustment of said dial or other object, a stencil to bedisposed over the dial, and a movable frame carrying the stencil.

5. In a device of the character described, the combination of a tablemeans for retaining a dial or other object on said table, whereby saiddial may be moved manually over the retaining means. a frame havinghinged connection with said table, a stencil disposed in said frame,means for securing one edge of said stencil with the frame, and flexiblemeans connecting the opposite edge portion of the stencil with saidframe.

'In testimony whereof, I have signed this specification in the presenceof two subscribing witnesses.

REINER W. ERDLE.

\Vitnesses ROBERT C. FULTON, JOHN F. OLoUGHLIN.

